County Maps US

Milwaukee County, Wisconsin

The most populous of Wisconsin's 72 counties.

CountyFIPS 55079

Within Wisconsin
Milwaukee County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Milwaukee, the county seat, located via the 2025 Census Gazetteer.

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Population
924,216
-14,390 (-1.5%) since 2020
Land area
241.5
square miles. A further 79.7% of the total area is water
Population density
3,828
people per square mile, computed rather than published
County seat
Milwaukee
Seat of county government.
Established
1835
190 years ago
Largest city
Milwaukee city
Population 562,407 for the whole place, which extends beyond this county.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Milwaukee County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Milwaukee County, Wisconsin from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 448 by 800 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Milwaukee County ranks

Position among the 72 counties of Wisconsin, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn WisconsinNationally
Population924,2161st of 7263rd of 3,144
Land area241.5 sq mi70th of 722,926th of 3,144
Population density3,828 per sq mi1st of 7229th of 3,144
Median household income$64,43558th of 721,675th of 3,143

Full data for Milwaukee County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population924,216Vintage 2025 Population Estimates
Population in 2020938,606Vintage 2025 Population Estimates
2020 estimates base?939,496Vintage 2025 Population Estimates
Land area241.5 sq mi2025 Gazetteer Files
Water area948.1 sq mi2025 Gazetteer Files
Total area1,190 sq mi2025 Gazetteer Files
Population density?3,828 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$64,435American Community Survey 2020-2024 5-Year Estimates
Median home value$230,700American Community Survey 2020-2024 5-Year Estimates
Median age35.5American Community Survey 2020-2024 5-Year Estimates
Households392,399American Community Survey 2020-2024 5-Year Estimates
Housing units426,715American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
+2,564
11,323 births, 8,759 deaths
Net migration
-2,724
More people moved out than moved in.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 6 areas bordering Milwaukee County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Racine CountyWisconsin51 mi198,919
Ozaukee CountyWisconsin48 mi94,346
Waukesha CountyWisconsin24 mi417,210
Ottawa CountyMichigan19 mi308,459
Muskegon CountyMichigan5.0 mi177,901
Washington CountyWisconsina single point139,238

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

Side by side

All 72 counties of Wisconsin

Open the interactive Wisconsin county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.